(VERY LATE POST) Debut of KSF C151B Set 649/650 (PHM)

KSF C151B Set 649/650, aka the Prognostic Health Monitoring (PHM) or Proof-of-Concept (POC) train, is an upgraded C151B that has been retrofitted with more safety features installed to support predictive and condition-based maintenance. Unfortunately, it had to withdraw early at Ang Mo Kio after just one trip, instead of going to Marina South Pier before turning back to Ang Mo Kio, where it would have been withdrawn anyway.